Apparatus for treating paper pulp and the like



Nov. 29, 1938. K. A. THoRsEN v 2,138,715

APPARATUS FOR TRATING PAPER 'PULP AND THE LIKE Filed April 24, 1936 2 Sheets--Shee'cl 0D O 0 0 O 000000 -eaoae Q o e a 1 u a g af l- I Nov. 29, 1938. K. A. THoRsEN APPARATUS FOR TREATING 4PAPER PULP AND THE LIKE 2 sheets-sheet' 2 Filed Aprill 24, 1936 Patented Nov. 29, vi938 NETE@ STATES @TENT @FMQE APPARATUS FR,

AND 'EIHUE lLlIKlE Application April 2i, 11936, Serial No. 76,27@ lin France May 6, 11.935

7 maims.

This invention refers to a machine for the crushing and disintegration of sundry materials, especially applicable for the separation of fibers for the Washing, rening and hydration of f1- brous materials destined for the manufacture of paper. The invention refers more particularly to machines comprising two cylinder presses supported one against the other and revolving at high speed, between which the material to be' ner as to discharge this material after having passed a number of times between the crushing cylinders. However, this repeated feeding of the cylinder presses through the hollow cylinder and also the regular feeding of the material into the machine presents certain diiculties; therefore, in order to permit the feeding cylinder to lift the material projected by the presses and to drop it again into same, it is generally supplied with balile plates or blades arranged parallel to the generatrices of this cylinder. When treating pasty and sticky materials, they adhere to the wall of the feeding cylinder under the effect of the violent projection of the cylinder presses and cannot be detached by gravity after they have once been lifted above the presses. On the other hand, the feeding of the materials up to the present time was done by imparting to the feeding cylinder a more or less pronounced incline in accordance with the material treated so that the regulation of the feeding speed was very dimcult to effect and quite impractical.

The machine which is the subject matter of this invention has the purpose of remedying these diiiiculties and permitting a regular and easily adjustable feeding and advance regardless of the nature of the material treated. It is characterized by the fact that the feed cylinder is driven at a. sulcient speed so that the material leaving the press adheres under the elect of the centrifugal force to the inner surface, from which it is detached by means of a scraper which rests against the high generatrix of this cylinder, while the advancing of the material treated is effected by means of a series of channels formed by planes which are inclined with respect to the straight section of the feeding cylinder and which are arranged either in the upper region of this cylinder above the scraper or below' the cylinder presses. v

Other important characteristic features of the invention will be better understood from the description below and the attached drawings in which there are described and shown by way of example two manners of realization of the machine. Y

Fig. l is a longitudinal section of an apparatus embodying my invention;

Fig. 2 is an end elevation thereof;

Fig. 3 is a transverse sectional view therethrough;

Fig. 4 is a longitudinal sectional view through a slightly modied form of the apparatus;

Fig. 5 is a transverse sectional view through the apparatus of Fig. 4; and

Fig. 6 is an end elevation of the apparatus of Figure 4, parts being shown in section.

Referring to the drawings it will be noted that the machine comprises in its two manners of realization, two cylinder presses 2 and 7 arranged on the inside of the hollow feeding cylinder I 9, which receives the material to be treated, which may be dry or mixed with a liquid, through the hopper l.

The press 2 resting in the fixed bearing 3 is maintained in rotation by the motor t through the cog wheel 5 and the chain 6.

The press resting in movable bearing 8 is maintained in rotation by the return side of the chain 6 through the intermediary of the wheel 9.

In the manner of realization shown in Figure 1, 2 and 3, the press I is supported more or less strongly against the press 2 by levers I0 and the counterweights Il. 'The springs l2 are employed to absorb the impacts caused by the passage between the presses 2 and 'I of the bunches of material and foreign bodies, etc. The threaded rod I3 and the stop IB serve to limit the advance of the press 'l if it is desired to maintain a certain space between the two presses.

In the case of Figures 4, 5 and 6, the application of the press i against the press 2 is effected by means of a threaded rod I5, a spring I6, and a wheel I1 which serves to regulate the degree of support between the two presses.

The wheel I8 is provided in order to limit-the advance of the press 1 if it is desired to maintain a certain space between the two presses.

The feeding cylinder I9 is maintained in rotation by the motor 20 through the intermediary jected by same to the bottom of the cylinder I9. The latter turns at such a speed that the eilect of the centrifugal force forces the material toadhere to the smooth inner surface of the cylinder. 'I'he material lifted by the feeding cylinder is'thrown against the scraper 23, arranged against the cylinder along the higher generatrix of the latter and it detaches from same the material which subsequently drops again between K the two presses. 'I'he advance of the material treated in the machine is obtained by means of several channels constituted by the planes 24 inclined with respect to the straight sections of the feeding cylinder I9 and `arranged in the upper part of this cylinder below the scraper 23. In

order to be able to regulate the advancing speed of the material, namely the number of passages of same between the presses, the inclined planes 24 forming the guide channels are articulated to the scraper 23 around the pins 25 and they are at the same time governed by a control rod 26 to which they are articulated and which is supplied for this purpose with a control handle 26'. 'I'hese inclined planes 24 employed lto advance the treated material can also be arranged in the lower part of the feeding cylinder I9 under the presses 2, l. They are, in this case, preferably articulated to the Scrapers 2l, serving for the cleaning of these presses. If it is desired to increase the advancing speed of the material, one can provide guide channels both in the upper and in the lower part of the cylinder I9. In order to facilitate the sliding of the material along the inclined planes 24, it is advantageous to give to the same a continuous slight vibratory movement which can be transmitted to them through the intermediary of the control rod 26 by a crank and rod, eccentric, or similar system. The satisfactory operation of the machine which has just been described requires in addition to a the material.

For this purpose, in the manner of realization shown in Figs. 1 to 3, the part of the cylinder I9 near the end opposite to that where the hopper I is located, is perforated along a certain length 28 below which there is arranged a discharge hopper 29. A rinser 30 is arranged, for instance, above the perforated part 28 in order to wash the perforations. When the presses 2 and I throw the material violently against the perforated wall 28, the parts sufliciently disintegrated passthrough these perforations, while the rest is again lifted by the cylinder I9 and discharged into the presses. In order to force all the material treated to pass through these cylinder perforations, the end 32 of same is closed by a partition 3| which may be eliminated in case that the discharge of the material through the end 32 of the cylinder I9 suflices.

In the manner of realization shown in Figs. 4 to 6, the discharge of the suihciently reduced material is effected by means of a perforated cylinder 33 arranged directly below the presses 2 and 'l in such a manner as to receive the stream of material leaving same. Inside the cylinder 33 there is arranged a channel 34 in the form of a gutter which receives the material which has passed through the perforations of the cylinder 33. The discharge of the reduced material toward the end 35 of the gutter 34 can be facilitated by a suitable propulsion device, for instance, by means of an Archimedes screw or by` a jet of water. The perforated cylinder 33 is cleaned by means of a rinser 36 arranged in the inside of this cylinder (Figs. 5 and 6) below the gutter 34. The end'of the cylinder I9 may also be closed by a partition 3|.

In the eventl that the materials treated require a certain washing during their disintegration, the perforated wall-of the cylinders I9 and 33 is repliatced or preferably lined by ne screen cloth, the washing water being supplied by a rinser 3l (Figs. 2, 3, 5 and 6) and discharged at the same time as the sufficiently reduced material. This washing is favored by the violent drying to which the material is subjected upon the passing of same through the cylinder presses.

In order to prevent certain, very viscous material from accumulating at the entrance of the cylinder presses 2, 1, forming a kind of vault and clogging the machine, one of these cylinders, or both of them, is supplied with interrupted grooves constituted by sections 38, 38', 38" etc., which are comparatively short and staggered, one with respect to the other, both in the direction of the length and along the circumference, these grooves being arranged along the generto make it possible for them to energetically crush the masses accumulated at the entrance and in this way prevent the formation of such vaults. f

I claim:

1. Apparatus of the class described, comprising a hollow rotating cylinder having a foraminous area for a'substantial portion of its length, a plurality of rotating crushingr or pressing rolls disposed Within said cylinder and extending longitudinally of the cylinder, said rolls being arranged cooperatively with one another to receive material between them, means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the material oi the inner wall of said cylinder to cause the material to fall between said rolls, and a stationary deilecting means extending longitudinally of said cylinder adjacent said scraper so as to receive the scrapedoff material and adapted to move the material longitudinally of the cylinder as it is repeatedly atrices of these cylinders, the effect of which is scraped off the cylinder wall and passed between said rolls.

2. Apparatus of the class described, comprising a hollow rotating cylinder having a foraminous area for a considerable portion of its length, a plurality of rotating crushing or pressing rolls disposed within said cylinder and extending longitudinally of the cylinder, said rolls being arranged cooperatively with one another to receive material between them, means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the material oif the inner wall of said cylinder to cause the material to fall between said rolls, and'a stationary deiiecting means comprising a plurality of def-lecting vanes arranged successively longitudinally of said cylinder adjacent said scraper so as to receive the scraped-off material, said vanes being amavis inclinedlongitudinally of the cylinder so as to move the material longitudinally as it is repeatedly scraped oi the cylinder wall and passed between said rolls.

3. Apparatus of the class described, comprising a hollowrotating cylinder having a foraminous area for a considerable portion of its length, a plurality of rotating crushing or pressing rolls disposed within said cylinder and extending longitudinally of the cylinder, said rolls being arranged cooperatively with one another to receive material between them, means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the material on the inner wall of said cylinder to cause the material to fall between said rolls, and a stationary deecting means comprising a plurality of deilecting vanes arranged-successively longitudinally of saidV cylinder adjacent said scraper so as to receive the scraped-off material, said vanes being inclined longitudinally of the cylinder so as to move the material longitudinally as it is repeatedly scraped ofi the cylinder wall and passed between said rolls, and means for adjusting the inclination of said vanes to vary the rate of longitudinal movement of the material.

4. Apparatus of the class described, comprising a hollow rotating cylinder having a foraminous area for a considerable portion of its length,

a plurality of rotating crushing or pressing rolls disposed within said cylinder and'extending longitudinally of the cylinder, said rolls being arranged cooperatively with one another to receive material between them, at least one of said rolls having a plurality of successive longitudinal grooves for relieving accumulation of material, said grooves occupying a minor portion of the roll surface means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the material of! the inner wall of said cylinder to cause the material to fall between said rolls, and a stationary defiecting means extending longitudinally of said cylinder adjacent said scraper so as to receive the scrapedof! material and adapted to move the material longitudinally of the cylinder as it is repeatedly scraped oi the cylinder wall and passed between said rolls.

5. Apparatus of the class described, comprising a hollow rotating cylinder, a plurality of rotating crushing or pressing rolls disposed within said cylinder and extending longitudinally of the cylinder. said rolls being arranged cooperatively with one another to receive material between.

them, 'means for feeding material to said cylinder,

a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the material ofi' the inner wall of said cylinder to cause the material to fall between said rolls, and deecting means extending longitudi-fnally of said cylinder adjacent said scraper so as to receive the scraped-E material and adapted to move the material longitudinally of the cylinder as it is repeatedly scraped off the cylinder wall and passed between said rolls, said cylinder having perforations over a portion of its discharge end for discharging material which has been disintegrated to a predetermined degree.

6. Apparatus of the class described, comprising a hollow rotating cylinder, a plurality of rotating crushing or pressing rolls disposed within said cylinder and extending longitudinally of the cylinder, said rolls being arranged cooperatively with one another to receive material between them, means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arrangedA to scrape the material oi the inner wall of said cylinder to cause the material to fall between said rolls, deflecting means extending longitudinally of said cylinder adjacent said scraper so as to receive the scraped-oil material and adapted to move the material longitudinally of the cylinder as it is repeatedly scraped oil' the cylinder wall and passed between said rolls, at least a portion of the wall of said cylinder being pervious, and rinsing means arranged cooperatively with the said pervious wall portion.'

'7. Apparatus of the class described, comprising a hollow rotating cylinder, a plurality of rotating crushing or pressing rolls disposed within said cylinder and extending longitudinally of the cylinder, said rolls being arranged cooperativelyywith one another to receive material between them, means for feeding material to said cylinder, a stationary scraper extending longitudinally of said cylinder above said rolls and arranged to scrape the materialv oil.' the inner wall of said cylinder to cause the material to fall between said rolls, defiecting means extending longitudinally of said cylinder adjacent said scraper so as to receive the scraped-oil' material and adapted to move the material longitudinally of the cylinder as it is repeatedly scraped ofi the cylinder wall and passed between said rolls, a perforated hollow cylinder within said first cylinder below said rolls for receiving material which has been disintegrated to a .predetermined degree, and a discharge trough or gutter within said last-named cylinder for lcarrying of! the discharged material.

' KRISTEN ANDREAS THORSEN. 

